Vector Addition Using OOP?

I want to create a program that asks the user to enter two vector (size and direction), and calculates its addition through turning it into components (using OOP).
here's what I've got so far (I don't know how to fix the errors), I'm not sure what's wrong/ to do next (vector 1 has a magnitude of 1 and 60 degrees while vector 2 has 2 and 50 degrees):

Where are the Data members?
I appreciate that you have modified complex number class to work here. This is a good example of code re-usability. But a Private inheritance in this matter would have been more eye-catching.
Well, The program has several typographical and syntactical errors.
Correct it!!.

To the OP: Please remember that every C++ keyword is written in lowercase, this was introduced to keep everything simple, so actually you don't have to hesitate whether you've to enter an uppercase letter or a lowercase one, it's just always in lowercase ...